DZ90149320005 Differential Carrier Assembly
1. Function
• Power Distribution and Speed Differential: The differential
carrier assembly is installed in the drive axle to distribute power
from the drive shaft to the left and right half-shafts while
allowing them to rotate at different speeds. This enables the
wheels on both sides to roll at different speeds when the vehicle
is turning, reducing tire wear and ensuring smooth turning.
• Reducing Tire Friction: By allowing the left and right wheels to
rotate at different speeds, the differential minimizes the sliding
friction between the tires and the ground, improving driving
stability and comfort.
• Torque Transfer: In four-wheel drive vehicles, the differential
lock can quickly engage when one drive axle slips, transferring
torque to the non-slipping drive axle to enhance traction and help
the vehicle escape from difficult terrain.
2. Specifications
• Part Number: DZ90149320005
• Application: Specifically designed for the intermediate axle of
SHACMAN Delong trucks (e.g., HDZ300 model).
• Brand: Shaanxi Hande Axle
• Type: Middle axle differential carrier
• Installation Position: Intermediate axle
• Compatible Models: SHACMAN Delong series trucks
3. Material
• Differential Carrier Housing: Typically made of cast iron or
aluminum alloy. Cast iron, especially nodular cast iron (e.g.,
QT420-10), is widely used due to its good strength, plasticity,
toughness, and cost-effectiveness. Aluminum alloy is also an
option, offering lower density, comparable strength to gray cast
iron, higher toughness, and better casting performance, which helps
reduce weight and improve heat dissipation.
• Internal Components: Gears, shafts, and bearings are usually made
of high-strength alloy steel to withstand high torque and friction.
4. Key Parameters
• Gear Ratio: The differential carrier may have a specific gear
ratio (e.g., 4.769), which affects the vehicle's torque output and
speed.
• Maximum Torque: The differential must be able to withstand the
maximum torque output of the engine to ensure reliable power
transmission.
• Bearing Capacity: The differential carrier should have sufficient
bearing capacity to support the weight of the vehicle and the
forces generated during driving.
• Weight: The weight of the differential carrier assembly varies
depending on the material and design, typically ranging from a few
tens to over a hundred kilograms.
• Dimensional Accuracy: Precise dimensions are critical to ensure
proper fitment with other drive axle components, such as the
half-shafts and drive shaft.
• Operating Temperature Range: The differential must operate
reliably within a specified temperature range to accommodate
different environmental conditions and heat generated during
operation.
